Padlock



Nov. 27, 192 8- A. C. JACKSON ET AL PADLOCK Filed March 17, 1926 2 Sheets-Sheet [169% (ZcfacQ/aw Wm 0% Nov. 27, 1928. mwsn A. c. JACKSON ET AL PADLOCK Filed March 17, 1926 2 Sheets-Sheet 2 Patented Nov. 27, 1928.

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stares rares pgg ARTHUR C. JACKSGN, F PHILADELPHIA, PENNSYLVANIA, AND WALDEMAR KROLL,

OF SAN FRANCISCO, CALIFORNIA, ASSIGNORS TO THE YALE 8: TOWNE MANUFAC- TURING COMPANY, OF STAMFORD, CGNNEOTTCUT, A CORPORATION OF CONNECTI- CUT.

PADLOCK.

Application filed March 17, 1926. Serial No. 95,308.

Our invention relates to certain improvements in padlocks, particularly of the type in which a U shaped shackle is adj ustably mounted in the lock casing, but it will be understood that the invention can be applied to other types of padlocks without departing from the essentialteatures of the invention.

One object of our invention is to so design the lock that the mechanism of the same can be assembled between two plates which are inserted in a lock casing having a cover plate which encloses the mechanism.

Another object of the invention is to provide a struck-up sheet1netal casing tor the lockmechanism which'canbe cheaply and accurately manufactured. 9

. A further object of the invention is to so design the several plates of the lock that when the lock is assembled the several parts will be in proper alignment.

A still further object of the invention is to so construct the bolt that when it is in engagement with one of the ratchet-teeh of the shackle, any pulling strain on the shackle will be taken by the casing through the guiding and spacing member.

And a still further object of the invention is to so design the lock that the bolt will interfere with the insertion ot the shackle when applied to the lock in the reverse direction.

Uther objects and details of construction and operation will be hereinafter fully described. a

In the accompanying drawings:

Fig. l is a taco view of our improved padlock; V I

Fig. 2 is an enlarged sectional view on the line 22, Fig.

Fig. 3 is a sectional view on the line 3 Fig. 5;

Fig. 4; is a sectional view similar to Fig. 3, with the tumblers removed;

5 is a sectional view on the line 5-4), Fig.3; f

Fig.6 is a. sectional view on the line 6-6, Fig.3;'

Fig. 7 is a detached sectional view showing the casing, cover plate, works-carrying plates, and spacing member;

vFig. 8 is a detached perspective view of the guide and spacing member;

Fig. 9 is a detached perspective view oi? the bolt;

Fig. 10 is a view of the stop plate of the key; and r Fig. 11 is a view illustrating a modification of the casing and works-carrying plates.

Referring to the drawings, the casing of the lock is cylindrical in the present instance, and has a shouldered portion 2, on which rests the cover plate 3 of the lock when the edge 4 of the casing is turned over it, as clearly shown in Fig. 5.

Between the back of the casing and the cover plate is a works-carrying frame, consisting of a rear plate 5, a front plate 6, and a guiding and spacing member 7. This member is clearly shown in Fig. 8. The spacing member has lugs 8 which extend through openings 9 in the two plates 5 and 6, and these lugs may be riveted onto the plates if desired after the locking mechanism is assembled between the plates.

Secured to the two plates 5 and 6 are posts 10-10, between which are located wards 11 and spacing washers 12, said wards being shaped to receive the key. In alignment With the wards is a key-plate 13, in the form of a flanged disk and slotted to receive the key. The flange of the key-plate extends between the outer works-carrying plate and the cover plate 3, as clearly shown in Fig. 5.

14 is a pivot post. for the bolt 15, which is shaped as shown in Fig. 9, and has a right angular extension 16, which is arranged to engage one of the ratchet-teeth 17 on the Ushaped shackle 18. The guide and spacing member is U-shaped as clearly shown in Fig. 8, having two parallel guiding members 19 and 19 and a connecting member-20, which latter fits against the upper surface of the lock casing (see Fig. The guiding memhers 19 and 19 are flanged as shown at 21, and resting on the flanges are the workscarrying plates 5 and 6. The lugs 8 project from these flanges'through the openings, as previously described.

The guiding and spacing member 7 is notched at .22 for the passage of an extension 16 of the bolt, so as to allow it to engage one of the ratchet-teeth 17 of the shackle, as clearly shown in Figs. 3 and 4. It will be noted that in referring to Fig. the lower edge of the extension of the bolt rests upon I the upper edge of one of the ratchet-teeth,

while the upper edge of the bolt rests against the wall of the notch 22 in the guiding and spacing member. By this construction the delicate locking mechanism is relieved from strain in the case of any pull upon the shackle, as the strain is taken by the guiding and spacing member 7 and transmitted to the easing of the lock.

23 is a post secured to the two plates 5 and 6, and mounted on the post is a flared U- shaped spring 24. One arm of the spring bears against the guiding member 19 while the other end oi? the spring rests agains the extension 16 ot the bolt 15, and tends to force the bolt into engagement with the shackle. The bolt 15 has a projecting portion 25 in the path of the lie so that when the .rev is turned in the lock it *ill bear upon the projection 25 and turn the bolt on its pivot and release the shackle.

At the bottom of the lock is a. stop plate 26, which is cut awz to allow the key to turn a quarter of a revolution and strike the shoulder 27 on the plate. This plate is held between the posts lO lO and the bottom flange of the guide member 19. This flange is notched at 28 to receive a projection on the plate 26, so that the plate is firmly held "etween the guiding member 19 and the posts 10. This plate is preferably the same height as the bolt, so as to form with the bolt a support for the wards and washers. On the pile of wards is a spring-washer 30, which bears against the upper works-carrying plate 6 and tends to hold the wards and washers in position.

In order to insure proper alignment of the several parts of the lock, the inner wall of the casing has a groove 31, and each works-carrying plate 5 and 6 has :1- lug extending into the groove 31, so that when the mechanism is assembled the works are brought into proper alignment with the openings 33 in the lock casing for the shackle. ilS these openings must be in alignment with the guiding members 19 and 19, and in order to insure the cover plate 3 being in alignn'ieut with the other parts of the lock. the upper workscarrying plate is notched as t ill; to receive a lug 35, Fig. 2, bent from the cover plate 3.

By the above arrangement, it will be seen that the mechanism of the lock can be assembled between the two worksrarrying plates and then inserted bodily in the casing. The parts are brought into proper alignment, an accurate fit is assured,and the assembling of the lock is made a simple matter.

By making the several parts register, the name or other marks on the cover plate are brought into proper position in respect to the name or other matter at the rear of the easing, and by so proportioning the extension 16 oi the bolt that it fits between one of the teeth of the shackle and the upper surface of the notch in the guide member 19, any strain aused by an excessive pull on the shackle will be taken by the casing through the guide.

Furthermore, the extension 16 of the bolt projects suthciently into the guide-way tor the shackle that the latter cannot be introduced into the lock casing in the reverse direction. This is an important feature in locks of this ype. r I

By constructing the lock in the manner shown, a very narrow shackle can be used, and as both arms of the shackle are provided with teeth. either arm or the shackle can be introduced into the notched guide, but it will be understood that the boltonly engages one arm of the shacl'lc.

In the main figures ot the drawings single soell, which forms a casing, is shown, whereas 111 l ig. 11 is shown adouble shell. The

plate 6 has a deep flange 6 in which the lock mechanism is located, and the'plate 5 is secured to the plate 6 by the guiding and spacing member 7. The outer shell which forms the casing is made with a deep flange as at 1, and the cover plate 3 is secured to the easing in the same manner by heading over the edge of the flange of the shell 1. Thus in this instance the edge of the lock structure when assembled is doubled.

Vi e claim 1. The combination of a casing having an integral back section and a deep llange,t-l1e flange of said section having agroove in its inner face; works-carrying plates mounted within the casing and the plates having lugs extending into the groove; a guide and spacing member located between the two workscarr ving plates, the casing being perforated in alignment with the guides; a U-shaped shackle arranged to pass through the perforations, one 01 the arms of said shackle having teeth, a bolt arranged to engage the toothed shackle; and a cover plate having a tongue, and the works-carr .'ing plates adjacent the cover having a. notch to receive the tongue whereby the several parts are brought into alignment.

2. The combination of an outer casing, and a cover plate therefor; an inner and an outer '\\'Ol'l(S-C2ll"l}l11g plate mounted in the casing; a guide and spacing member consist- 'n oi two parallel members and it connect n yoke, said guide and spacing member bei located between the two works-carrying pl .tes, the casing being perforated in alignment with the guide andspacing member; a shackle extending through perforations in the casing; and a bolt arranged to engage one arm 01" the shackle.

3. The combination of o casing; workscarrying plates; a guide and spacing member located between the plates, the casing being perforated in alignment with the guideways of the guide and spacing member; a shackle arranged to extend through the per forations in the casing, the guide and spacing member being notched; and a bolt located in the space between the works-carrying plates and having a portion arranged to extend into the notch in the guide and spacing member and engage the shackle.

t. The combination of a casing; works-carrying plates; a guide and spacing member located between the plates, the casing being perforated in alignment with the guideways of the guide and spacing member; a toothed shackle arranged to extend through the perforations in the casing, the guide and spacing member being notched; and a bolt located in the space between the Works-carrying plates and having a prO ecting port-ion arranged to enter the notch in the guide and spacing me1n- 7 her and to engage the toothed shackle, one side of the projecting portion being in alignment with the shackle, and the other end engaging the wall of the notch in the guide and spacing member, so that any pull on the shackle will be directly against said member.

5. The combination of a casing having an integral back and a deep flange, said flange having a shoulder; a cover plate resting on the shoulder, the flange being turned over the cover plate; two works-carrying plates mounta guide and spacing member located between the two plates and having in s, the plates having perforations to receive the lugs guide posts extending from one plate to the other; Wards and washers located between the posts and within the guide and spacing member; a toothed shackle; a bolt pivoted to the works structure and having a portion arranged to engage a tooth of the shackle; a. spring tending to hold the bolt in engagement with the shackle; a stop plate in the same plane as the bolt, said stop plate having a projection, the guide and spacing member being recessed to receive the projection, and the guide and spacing member also being notched to receive the end or the bolt. 6. A guide and spacing member for a pad lock made in one piece and consisting of, two

parallel sections connected by an integral yoke, each section forming a guide for a leg of a shackle of a padlock, and one of said sections'being notched to receive a. bolt.

7. A guide and spa-cing'member fora padlock made in one piece and U-shaped in form to provide two parallel guiding sections, each section of the guide and spacing member having an open passage for a shackle, and having lugs arranged to extend into perforations in carrying-plates.

8. The combination in a padlock, of a casing having openings at opposite sides for the passage of a shackle; a cover plate for the casing; works-carrying plates, a spacing guide for a U-shaped shackle, said guide having a notch; a toothed U-shaped shackle extending through the openings in the casing; a bolt; and a spring arranged to hold the bolt normally within the notch of the guide, said bolt preventing the passage of the shackle in the wrong direction.

9. The combination in a padlock, of a casing; a cover plate therefor; front and back works-carrying plates; a combined U-shaped spacing and guiding member located between the two works-carrying plates and attached thereto; a toothed U-shaped shackle arranged to slide in the casing and against the sides of the guiding member; a bolt arranged to engage one arm of the shackle; and locking mechanism located in the space between the two works-carryingplates and between the two arms of the spacing and guiding member.

10. The combination in a padlock, of a casing; a cover plate therefor; front and back works-carrying plates; a combined U-shaped spacing and guiding member located between the two works-carrying plates; guide ways in each side of the spacing and guiding memher, the casing being perforated in line with the guide ways; a toothed U-sha-ped shackle extending through the perforations in the casing and in each guide way; posts secured to the works-carrying plates; and a bolt mount ed on a pivot and arranged to engage one of the toothed arms of the shackle.

11. The combination in a padlock, of a casing having a deep flange, the flange having a deep groove in its inner wall; a works-carrier consisting of two plates and a spacing memher, said carrier having a lug extending into the groove in the flange of the casing, the outer works-carrying plate having a notch; and a cover plate having a tongue extending brought into alignment.

ARTHUR C. JACKSON. VVALDEMAR KROLL. 

